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Old 01-29-2007, 08:07 PM   #1
satimis
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PC fails to boot - a new box


Hi folks,

CPU - AMD Athlon64 dual core 512Kx2 3800
Motherboard - ASUS M2N-E
Video Card - Gigabyte GeForce 6600 DDR2 256M
RAM - Corsair DDR2 PC-6400(800) dual channel 1Gx2 (2G)

Just build the capationed PC. It failed to boot. The problem is as follows;

Remark: all new components except the video card which was removed from another PC. The said card is working without problem. I put it back to its PC.


- turned on the PC and pressed [DEL] at boot
- if started the BIOS page. But I can't save the settings selected. It only hung on screen after hitting [OK]
- pressed [Ctrl]+[Alt]+[Del] The PC rebooted. Same problem reoccured unable to save BIOS. Pressed [F5] - default setting, with the same result, unable to save only hanging on screen
- pressed [Ctrl]+[Alt]+[Del] again. PC failed to boot with a dark screen resulted.

I have to turn off the power, allowing the PC standing a while (about 20 min). The PC can be booted again. However the same problem reoccured.

I suspect the problem coming from the floppy drive. I put a working floppy drive from another PC on this new box. Problem remained the same.

Please advise what will be the possible cause. Reset button on PC has no function. TIA


B.R.
satimis

Last edited by satimis; 01-29-2007 at 08:09 PM.
 
Old 01-29-2007, 08:52 PM   #2
michaelk
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Check to make sure the BIOS clear memory shorting jumper is not configured to clear the memory.
Verify all cables and wired correctly.
 
Old 01-29-2007, 09:27 PM   #3
JAKK
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Hi. To add to the above post,the fact that you can't save the bios settings might indicate that the cmos battery is faulty. You could try replacing it with a new one(cmos battery is the button cell,most desktop ones are model 'cr2032',you should still double check,though). Other than that,if you are getting no beeps/error codes at post,then just re-seat all your components like the other post said.
 
Old 01-29-2007, 10:01 PM   #4
Electro
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First try turning the computer completely off. This includes disconnecting the power supply from the outlet. Wait a few minutes and then move the jumper to clear the BIOS information. Then move it back to its default position. Power up the computer and try saving any settings. If it still can not be saved, either replace the battery or invest in buying a BIOS chip.

I have seen in some cases that it could be a bad processor.

You will have to be careful handling ASUS motherboards because the boards are thin and are less quality than other manufactures. Also Corsair memory is known to have problems with AMD (socket 754, 940, 939, and AM2) processors. I recommend using ECC memory when using multi-processor systems.
 
Old 01-30-2007, 07:44 AM   #5
satimis
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Hi folks,

Tks for your advice.

I visited ASUS agent bringing with me;
- M2N-E motherboard
- CPU - AMD Athlon64 dual core 512Kx2 3800
- RAM - Corsair DDR2 PC-6400(800) dual channel 1Gx2 (2G)
- a brand new Video card, ASUS EN7300GS

The technician started the test as follows;
- put the motherboad on a paperbox, with RAM, CPU and video card plugin
- connected a power supply to the motherboard
- connected a LCD monitor to the video card (VGA connection)
- connected a keyboard to the motherboard.
- turned on the power supply.

BIOS page started without problem. Saving new settings were possible.

He advised me to repeat the test at home. After having checked it works without problem, connect other components, HD, floppy drive, CD/DVD Rom, etc. and install OS on the HD. After finish and checking the OS working without problem put the whole set components back to the PC box.

I forgot to ask him how can the motherboard boot without connecting power switch to activate booting.

B.R.
satimis

Last edited by satimis; 01-30-2007 at 07:45 AM.
 
Old 01-30-2007, 05:40 PM   #6
Electro
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ASUS boards will start up if you switch the power supply to input or on, but it only comes on a brief time. You will have to find a way to connect the two headers for the power on to switch on the motherboard for other attempts. You can use the computer case's switches or attach micro-clips to the headers and briefly make a connection.

If the motherboard works when it is outside of the case, you could have grounding problem or the screws to mount the motherboard in the chassis is tighten down too much. The screws should be hand tight not torqued. I recommend sticking rubber or plastic stand-offs around expansion slots, memory, CPU and power connectors. These insulated stand-offs will provide extra support than what the metal stand-offs provides.
 
Old 01-30-2007, 09:46 PM   #7
satimis
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Hi Electro,

Tks for your advice.

Quote:
ASUS boards will start up if you switch the power supply to input or on, but it only comes on a brief time. You will have to find a way to connect the two headers for the power on to switch on the motherboard for other attempts. You can use the computer case's switches or attach micro-clips to the headers and briefly make a connection.
I solved my problem by shorting the 2 power switch pins on the motherboard. It works for me.

I did as advised by the technician. Sometimes it worked and other time failed. The PC always hung after editing the settings on BIOS. I moved the RAM to another pair of slots then it worked, but hanging again. Another time the PC failed to boot only a black screen resulted. I have to switching off and wait for an hour or longer before the PC can boot to BIOS again.

I suspect the problem coming from RAM. I only have one PC running DDR2 RAM, no other PC running DDR2 unable to check.

The reset pins have no function. I shorted them with a screw driver and it did not reset continue to run with a dark screen.

Others noted with tks.


B.R.
satimis
 
Old 01-31-2007, 07:47 AM   #8
satimis
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Hi folks,

I visited ASUS agent the 2nd time, bringing with me the M2N-E motherboard, Corsair Dual Channel RAM and ASUS video card. (same agent for Corsair RAM) This time the technician took a serious aptitude on my complaint, checking the components carefully. He turned on the motherboard with RAM and video card plugged in. It failed to boot, the luck not being with him. Then he checked the RAM on all 4 slots individually discovering that one slot did not work. He suspected the motherboad having problem but without a new motherboard for replacement. He requested me coming back 2 days later. I rejected saying that I'll get a new motherboard replaced with the retailer. He asked me to wait a while taking the RAM to the lab to test. He returned with another conclusion that one of the Corsair RAM was found not working properly, some time working another time fail. He requested me waiting for 15 min for him to get a new pair of Corsair RAM. He came back with a new pair of Corsair dual channel RAM. He tested the RAM separately as well as in pair on all 4-slots to certifying that they were working w/o problem. I got a replacement of another pair of Corsair RAM.

I'll build the PC later making an overall testing.

The problem costs me 3 working days, 2 trips to ASUS agent and a power supply. The cable of the power supply for connecting floppy drive got burned accidently for unknown cause after numberous plugin and removed. It was also a brand new power supply made by 2th Max. I turned up to the retailer shop for replacement but met with a refusal on the ground that I plugin it on the floppy drive wrong. So I have to get another new power supply. Although the retailer checked it without problem. I have no confidence on it anymore. I don't know whether the floppy drive got damaged or not. I don't need it.

Had the technician checked the motherboard and RAM carefully on my first visit. OR if I tested the Corsair RAM one-by-one at start on booting the PC, not in pair I'll discover the problem.

I do hope that there will be no further problem surfaced on my continue test building the PC. Now I have almost all new components, motherboard, RAM, video card, power supply, HD, case, etc. except the DVD writer.

Anyway, folks, lot of thanks for your advice.


B.R.
satimis

Last edited by satimis; 01-31-2007 at 10:34 AM.
 
Old 02-02-2007, 05:31 AM   #9
satimis
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Problem continue

Hi folks,

Have Slackware installed and running on this PC. The PC seems generally working except USB ports, all 6 of them. They seems not stable.


Made following tests:-

1)
Attached an USB mouse and booted PC. The mouse can't be detected and did not work after starting KDE desktop

2)
Attached a wireless mouse to USB port. Wireless mouse failed to work.

3)
Plugged a Pen stick (thumb drive) on each of the them. Sometime worked another time failed. (tested 2 pen sticks. They are working on another PC without problem)

If working
# fdisk -l
Code:
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         509      489118    6  FAT16
/dev/sdb2             510        1023      493954    6  FAT16
can detect it.

If not working
on plugging in the LED light glowed first and went off soon.

Checked BIOS, USB 2.0 , 1.0 and lagacy all enabled.

How to check the ports to see whether it is hardware or software problem before calling the ASUS agent again. TIA


B.R.
satimis
 
Old 02-02-2007, 01:45 PM   #10
Electro
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I have not heard of a floppy drive frying from reversing the voltage. I have a TEAC floppy drive that only lits its LED when the voltage is reversed. If the floppy drive got fryed, it is possible that the power supply is bad even though it is new.

I suggest power supplies from Eneramax, Seasonic, Power & Cooling and maybe Silverstone. I have never heard of 2th Max. Sounds like 2th Max is 2nd to the bottom. I use Seasonic power supplies and they are quiet, efficient, and reliable.

Number 1 of all computer related problems is the power supply. The power supply is rarely discuss during troubleshooting.
 
Old 03-25-2007, 07:01 PM   #11
UhhMaybe
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Cool

IMO the leads on the computer power, restart, and LED lights have four sides. On one side is sometimes writing that can be used to point all the leads in the same direction. This will set the polarity of all the leads correctly. If the negative and the positive leads are reversed, the restart button will not function. If the ground on the LED lights is not used, the motherboard may be shorting. If the floppy cable is backwards, the LED will stay on, as already mentioned. It will create problems when installing, so it does need to be correctly installed. The red stripe is usually in the opposite direction to the cables for hard drive and optical drives. In most systems YOU can see the red stripe on two or more cables. And not see the red stripe on the floppy cable. With the computer unplugged, power supply switch off on the back of the power supply, and the plugable hardware unplugged by firewire and USB. Also unplugged from the wall if YOU really want to cover YOUR bases, use a check list. Clear the CMOS amd wait a few seconds. Then reset the jumper to run. After plugged back in; turn on the computer, and go into the BIOS. Set the password for Supervisor. This will let YOU save YOUR settings in the BIOS. If YOU go into BIOS as user; the settings will stay the same, user can not change BIOS settings.
 
Old 03-25-2007, 11:07 PM   #12
satimis
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Ho folks,

Tks for your advice.

The power supply in problem has been shelved. It has been tested by the retail shop without problem, only one of the cables for connecting the floppy burned. It has been cut off.

The floppy is still on the PC but not in use without connected to the power supply which I changed from another PC. Is there any way to check the floppy and the power supply in problem? I don't expect getting the working power supply burned if the floppy is having problem. If I install the problematic power supply on the PC again, I don't know whether it'll cause other components in trouble. Any suggestion checking the floppy drive and the problematic power supply. TIA

B.R.
satimis
 
  


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